Japan has asked the US for help to stop the American-designed reactors plunging into uncontrollable meltdown

Japan has asked the US for help to stop the American-designed reactors plunging into uncontrollable meltdown

...............Japan has asked the US for help to stop the American-designed reactors plunging into uncontrollable meltdown.

The latest blast occurred after cooling water dropped repeatedly in unit 2, with the nuclear fuel rods partially exposed - risking an overheat of up to a temperature of 2,200 degrees Celsius....................